The enzyme cytochrome C, involved in oxidation-reduction processes in the living system, has 0.43% Fe and 1.48% S. Calculate the number of S atoms in the enzyme per Fe atom.

Answer

6

Explanation

The minimum atom of Fe in the enzyme is one.
0.43 g of Fe is present in 100 g of enzyme.
56 g of Fe is present in `100/0.43 xx 56 = 13 xx 10^(6) g` of enzyme
Thus, the minimum mol. Wt. of the enzyme = 13000
Similarly, 32 g of Sis present in `(100 xx 32)/1.48 =2.16 xx 10^(3)`
Thus the minimum mol. wt. corresponding to 1 S atom =2160
`therefore` No of S atoms in the enzyme per Fe atom
`=(13000)/(2160) ~~ 6`